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4-9
4-1-4 Free Allocations
H Allocation Areas and Maximum Words for Different PCs
When free allocations are used, the remote I/O areas consist of input blocks 1 and 2, which input Slave
data to the PC, and output blocks 1 and 2, which output data from the PC to the Slaves. These four
blocks can be allocated as desired using the following words. Each block, however, must consist of con-
tinuous words within one data area.
PC
SYSMAC Programmable Controllers
CV-series PCs C200HX/HG/HE PCs
C200HS PCs
CV500/
CVM1-CPU01-E
All other
models
C200HE-CPU11-E All other
models
(all models)
Words that
can be
CIO 0000 to
CIO 2427
CIO 0000 to
CIO 2555
IR 000 to IR 235, IR 300 to IR 511 IR 000 to IR 235,
IR 300 to IR 511
allocated
G008 to G255 HR 00 to HR 99
LR 00 to LR 63
HR 00 to HR 99
LR 00 to LR 63
D00000 to D08191 D00000 to
D24575
DM 0000 to DM 4095 DM 0000 to
DM 5999
DM 0000 to
DM 5999
Max. No. of
words
Each block can be up to
100 words (including unused
areas).
Each block can be up to 100 words
(including unused areas).
The total number of words in all four
blocks must be 300 words or less
(including unused areas).
If message communications are
used, the total number of words in
all four blocks must be 100 words or
less.
The total number
of words in all
four blocks must
be 80 words or
less (including
unused areas).
Note 1. The Data Memory (DM) Area cannot manipulated by bit, so it is not suitable as the remote I/O
allocation area for the Inverter.
Note 2. If a CPU Bus Link is used with a CV-series PC, the G Area is used for the CPU Bus Link, mak-
ing it impossible to use this area for CompoBus/D communications.
Output block 1
Output block 2
Start word
No. of words
allocated (“oc-
cupied”)
Start word
No. of words
allocated (“oc-
cupied”)
Input block 1
Input block 2
Start word
No. of words
allocated (“oc-
cupied”)
Start word
Output area
Input area
No. of words
allocated (“oc-
cupied”)
Note Using a Configurator, set the areas for each block, the start word, and the allocated words for
each block.
CompoBus/D System Startup Chapter 4